Microphone



FIG. 1 is a perspective view of a microphone showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevational view of a second embodiment of my new design; and

FIG. 6 is a bottom plan view of the second embodiment. 

The ornamental design for a microphone, substantially as shown and described. 